ASTROSAT CZTI

Data Quality Report

Orbit 20180502_G08_002T01_9000002072_level2

Creation date: 2018-05-04T18:17:07.552173
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G08_002T01_9000002072cztM0_level2_bc.evt modeM0/AS1G08_002T01_9000002072cztM0_level2_quad_clean.evt
Size (bytes)2,668,314,240962,879,040
Size2.5 GB 918.3 MB
Events in quadrant A15,203,0466,100,020
Events in quadrant B15,677,8126,142,720
Events in quadrant C17,618,7766,135,373
Events in quadrant D27,425,3905,869,551

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01501380
B01519130
C01541950
D01894680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014580
B014580
C014580
D014580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01130
B01130
C01130
D01130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A717437561.053761%
B717439031.258659%
C717435850.815411%
D7174321282.966143%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 82769 71746 27 27 0.03% 0.04%
B 82769 71745 18 18 0.02% 0.03%
C 82769 71747 4 4 0.00% 0.01%
D 82769 71746 230 230 0.28% 0.32%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 189 372322 446.63 3775 3694 825.4
A 14 111 112711 132.08 3775 3694 825.4
A 1 162 96905 112.93 3775 3694 825.4
B 10 16 296965 414.82 3782 3683 707.0
B 3 209 155720 215.04 3782 3683 707.0
B 0 214 146559 202.09 3782 3683 707.0
C 3 233 2535350 3062.6 3738 3680 826.6
C 14 220 443185 531.68 3738 3680 826.6
C 6 253 23612 24.11 3738 3680 826.6
D 1 52 6948297 7756.79 3693 3586 895.3
D 13 104 2119245 2363.05 3693 3586 895.3
D 10 157 1692277 1886.16 3693 3586 895.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter